package com.jxb.myshop.web.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter("/*")
/**
 * @author: JXB
 * @Description:
 * @date: 2022/9/15 21:06
 * @param:  * @param null
 * @return: {@link null}
 * 设置所有servlet的字符编码
**/
public class Filter01_Charset implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest req = (HttpServletRequest) servletRequest;
        HttpServletResponse resp = (HttpServletResponse) servletResponse;
        req.setCharacterEncoding("utf-8");
        resp.setContentType("text/html;charset=utf-8");
        // 放行
        filterChain.doFilter(req,resp);
    }

    @Override
    public void destroy() {

    }
}
